EP 3571006 A1 20191127 - DEVICE AND METHOD FOR THE AUTOFRETTAGE OF A WORKPIECE
Title (en)
DEVICE AND METHOD FOR THE AUTOFRETTAGE OF A WORKPIECE
Title (de)
VORRICHTUNG UND VERFAHREN ZUM AUTOFRETTIEREN EINES WERKSTÜCKS
Title (fr)
DISPOSITIF ET PROCÉDÉ D'AUTO-FRETTAGE D'UNE PIÈCE À USINER
Publication
Application
Priority
- DE 102017200917 A 20170120
- EP 2018050286 W 20180105
Abstract (en)
[origin: WO2018134063A1] The invention relates to the mechanical and the hydraulic autofrettage of workpieces, and provides a technical solution for a combination of said two methods. The invention relates to a method for the autofrettage of a workpiece (1), wherein the workpiece is arranged between a first securing means (2.2; 13) and a second securing means (2.1; 12), wherein high-pressure fluid (HF) is applied to an internal volume (Vi), formed between the securing means, of the workpiece, wherein a ram (11) is driven into the internal volume through an inlet (13.1) in the first securing means (13), and wherein, as a result of the ram being advanced, not only is a fluid pressure generated in the internal volume (Vi) but also the workpiece (1) is mechanically autofrettaged by means of the ram. Furthermore, the invention relates to a device for the hydromechanical autofrettage of a workpiece.
IPC 8 full level
B23P 9/00 (2006.01); B23P 9/02 (2006.01); C21D 7/12 (2006.01)
CPC (source: EP US)
B21D 26/033 (2013.01 - US); B23P 9/00 (2013.01 - EP); B23P 9/025 (2013.01 - EP); C21D 7/12 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018134063 A1 20180726; DE 102017200917 A1 20180726; EP 3571006 A1 20191127; EP 3571006 B1 20240403; US 11298737 B2 20220412; US 2019358693 A1 20191128
DOCDB simple family (application)
EP 2018050286 W 20180105; DE 102017200917 A 20170120; EP 18700076 A 20180105; US 201816472366 A 20180105